I have a very large music collection...around 800 GB. A lot of my albums have .m3u files included. I did a quick Windows 8 search and I have hundreds of these .m3us in many of my album folders. Can I do a mass delete of these safely? Every time I have to add my music to a new itunes library I end up spending way to much time deleteting all the playlists that these .M3u files create.